8423839705 has 16 divisors (see below), whose sum is σ = 10359393408. Its totient is φ = 6572016000.

The previous prime is 8423839693. The next prime is 8423839727. The reversal of 8423839705 is 5079383248.

It is not a de Polignac number, because 8423839705 - 2⁵ = 8423839673 is a prime.

It is a super-2 number, since 2×8423839705² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602140 + ... + 615970.

It is an arithmetic number, because the mean of its divisors is an integer number (647462088).

Almost surely, 2^8423839705 is an apocalyptic number.

It is an amenable number.

8423839705 is a deficient number, since it is larger than the sum of its proper divisors (1935553703).

8423839705 is a wasteful number, since it uses less digits than its factorization.

8423839705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16848.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 8423839705 is about 91781.4780061860. The cubic root of 8423839705 is about 2034.7139598805.

The spelling of 8423839705 in words is "eight billion, four hundred twenty-three million, eight hundred thirty-nine thousand, seven hundred five".